---
title: hkdf_sha256_aesctr_hmac__symmetric__none
framework: applearchive
role: symbol
role_heading: Type Property
path: applearchive/archiveencryptioncontext/profile-swift.struct/hkdf_sha256_aesctr_hmac__symmetric__none
---

# hkdf_sha256_aesctr_hmac__symmetric__none

A constant that represents unsigned, symmetric key encryption.

## Declaration

```swift
static let hkdf_sha256_aesctr_hmac__symmetric__none: ArchiveEncryptionContext.Profile
```

## See Also

### Profile Constants

- [hkdf_sha256_hmac__none__ecdsa_p256](applearchive/archiveencryptioncontext/profile-swift.struct/hkdf_sha256_hmac__none__ecdsa_p256.md)
- [hkdf_sha256_aesctr_hmac__symmetric__ecdsa_p256](applearchive/archiveencryptioncontext/profile-swift.struct/hkdf_sha256_aesctr_hmac__symmetric__ecdsa_p256.md)
- [hkdf_sha256_aesctr_hmac__ecdhe_p256__none](applearchive/archiveencryptioncontext/profile-swift.struct/hkdf_sha256_aesctr_hmac__ecdhe_p256__none.md)
- [hkdf_sha256_aesctr_hmac__ecdhe_p256__ecdsa_p256](applearchive/archiveencryptioncontext/profile-swift.struct/hkdf_sha256_aesctr_hmac__ecdhe_p256__ecdsa_p256.md)
- [hkdf_sha256_aesctr_hmac__scrypt__none](applearchive/archiveencryptioncontext/profile-swift.struct/hkdf_sha256_aesctr_hmac__scrypt__none.md)